tv debate -- heat s up as mitt romney takes the fight to president obama in their first tv debate. >> michael schumacher announces his retirement. we do not want war, but we will protect our borders. that is the message from turkey after 24 hours that saw it launch multiple attacks on syria and a green light from lawmakers for more to damage the u.s. state department said it considered -- for more. >> the u.s. state department said it considered turkey's response to be proportionate. thursday morning, turkey launched a second round of shelling. some reports say several syrian soldiers were killed. >> the retaliation came after five turkish civilians were killed after syrian mortar fire. turkey says that syria has now apologized for that incident and has promised it would not happen again. >> it is a small turkish town bordering war-torn syria. it has come under the line of fire. syrian borders struck a residential neighborhood, killing five civilians -- syrian mortars struck a residential neighborhood, killing five civilians. cross-border buyer has struck 37 times since the start of